CN109163047A - A kind of non-linear current vortex is used to matter damper and design method - Google Patents
A kind of non-linear current vortex is used to matter damper and design method Download PDFInfo
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- CN109163047A CN109163047A CN201811249160.4A CN201811249160A CN109163047A CN 109163047 A CN109163047 A CN 109163047A CN 201811249160 A CN201811249160 A CN 201811249160A CN 109163047 A CN109163047 A CN 109163047A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F6/00—Magnetic springs; Fluid magnetic springs, i.e. magnetic spring combined with a fluid
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Abstract
The invention belongs to structural vibration control technology fields, and in particular to a kind of non-linear current vortex is used to matter damper and design method, and it includes transmission component, rotary electric eddy current damping element, inertial flywheel and outer cylinder that the non-linear current vortex, which is used to matter damper,；Transmission component includes ball screw system, linear guide and connecting rod；Rotary electric eddy current damping element includes upper and lower magnetic conduction plectane, magnet group and conductor plectane；Inertial flywheel is sleeved on ball-screw and is fixed as one with ball nut；Ball screw sequentially passes through the centre bore of magnetic conduction plectane, ball nut, lower magnetic conduction plectane and inertial flywheel.The rotary inertia of the damped coefficient of rotary electric eddy current damping part and rotating member can be separately converted to amplify more times of equivalent axial damped coefficient and inertia mass by the present invention, its inertia mass negative stiffness effects further improves the passive energy dissipation efficiency of damper, while realizing nonlinear characteristic of the eddy-current damping power Rate Index less than 1.
Description
Technical field
The invention belongs to structural vibration control technology field, in particular to it is a kind of using ball-screw-transmission system production
Non-linear current vortex is used to matter damper and design method.
Background technique
Field of vibration control is often mostly traditional viscous, viscoelastic damper with damping unit, but such damper
There is the problems such as easy-to-leak liquid, durability are low, later period damping parameter adjusts difficulty as time goes by.Eddy current damper can have
Effect solves problem above, has contactless, low friction, easy to maintain, the service life is long, working principle is simple, easy to control, reliability
Height, and the advantages that will not be polluted to environment.Eddy current damper utilizes electromagnetic induction principle, when conductor plectane cuts magnetic
Current vortex, current vortex and former magnetic field interaction can be generated when the line of force in conductor plectane, generates and hinders the movement of conductor plectane
Lorentz force, while the kinetic energy of acquisition is converted to thermal dissipation by current vortex and gone out by conductor plectane.Electricity whirlpool damper at present
It is widely used to space structure and vehicle vibration damping, brake, the fields such as rotating mechanism vibration control, in answering for field of civil engineering
With relatively fewer.
Recently as the further investigation to eddy current damper damping capacity, there are a variety of construction shapes in eddy current damper
Formula, such as board-like, axial relative movement mode, axial rotary etc., it is mostly main no matter from appearance to in-built design
It concentrates on eddy current damper energy efficiency and promotes aspect.Board-like eddy current damper and axial relative movement formula eddy-current damping
Device damped coefficient itself is relatively low, is difficult damping force needed for meeting large scale civil engineering structure.It is passed using ball screw assembly,
Dynamic system can significantly improve eddy-current damping energy efficiency, to realize the design of large-tonnage eddy current damper.Currently,
Though most of eddy current dampers are able to achieve the linear character that damping force Rate Index is equal to 1, its energy efficiency is far below
The eddy current damper of nonlinear characteristic of the damping force Rate Index less than 1.
Summary of the invention
Aiming at the problems existing in the prior art, the present invention provides a kind of non-linear current vortex and is used to matter damper and design side
Method is turned the inertia mass of the damped coefficient of rotary electric eddy current damping part and rotating member using ball-screw-transmission system
Turn to the equivalent axial damped coefficient and equivalent axial additional mass of more times of amplification.It is realized by conductor plectane linear reciprocating motion
Nonlinear characteristic of the eddy-current damping power Rate Index less than 1, while it is apparent to make full use of damper rotating member to generate
Quality negative stiffness effects further improve the passive energy dissipation efficiency of eddy current damper.
To achieve the goals above, the following technical solution is employed by the present invention:
The present invention provides a kind of non-linear current vortexs to be used to matter damper, including transmission component, rotary electric eddy current damping
Element, inertial flywheel and outer cylinder；The transmission component includes ball-screw-transmission system, linear guide and connecting rod, the rolling
Ballscrew transmission system is set to the middle position of damper, and the rotary electric eddy current damping element and inertial flywheel are set with
In the outside of ball-screw-transmission system, the linear guide passes vertically through the top of outer cylinder, and upper end passes through connecting rod and ball
Leadscrew drive system is fixedly connected, and lower end is fixedly connected with rotary electric eddy current damping element；The ball-screw-transmission system,
Rotary electric eddy current damping element and inertial flywheel are built in outer cylinder by up-thrust bearing and lower thrust-bearing.
Further, the ball-screw-transmission system includes ball screw and the ball spiral shell that is sleeved on ball screw
The upper end of mother, the ball screw are equipped with upper connecting pin.
Further, the rotary electric eddy current damping element include upper magnetic conduction plectane, lower magnetic conduction plectane, conductor plectane,
Upper magnet and lower magnet；The upper magnetic conduction plectane and lower magnetic conduction plectane are separately fixed at the top and bottom of ball nut；It is described
The quantity of upper magnet and lower magnet is 2n, and wherein n >=1, the upper magnet are uniformly fixed on along the circumferential direction of upper magnetic conduction plectane
The lower surface of upper magnetic conduction plectane, the lower magnet are fixed on the upper surface of lower magnetic conduction plectane, and symmetrical with upper magnet；It is described to lead
Body plectane is set in the outside of ball nut.
Further, the inertial flywheel is sleeved on ball screw and is fixed as one with ball nut, and is installed on
The lower surface of lower magnetic conduction plectane；It is reciprocal that the inertial flywheel, upper magnetic conduction plectane, lower magnetic conduction plectane and ball nut do synchronous rotary
Movement.
Further, the conductor plectane is made of an electrically conducting material；The upper magnetic conduction plectane and lower magnetic conduction plectane are by magnetic conduction
Material is made；The inertial flywheel is round plate；The upper magnet and lower magnet use permanent magnet.
Further, the outer cylinder includes upper outer cylinder, lower outer cylinder and is separately fixed on the outer cylinder of outer cylinder upper and lower ends
Plectane under plectane and outer cylinder；The lower end of the lower outer cylinder is equipped with lower connecting pin.
Further, the ball screw successively passes through plectane on outer cylinder, up-thrust bearing, upper magnetic conduction from top to bottom
Each component centre bore of plectane under plectane, conductor plectane, lower magnetic conduction plectane, inertial flywheel, lower thrust-bearing and outer cylinder, and it is above each
There are certain gaps between ball screw for component.
Further, the linear guide includes linear bearing and the round rail of the straight line of plectane on outer cylinder, the straight line
The upper end of circle rail is fixedly connected with the connecting rod, and lower end is fixedly connected with conductor plectane, straight line circle rail and plectane on outer cylinder and
There are gaps between upper magnetic conduction plectane；The linear bearing is set on straight line circle rail, and is fixed on the upper of plectane on outer cylinder
Surface；The connecting rod is fixedly connected with ball screw；It is past that the straight line circle rail, conductor plectane and ball screw do synchronous linear
Multiple movement.
The present invention also provides the design methods that a kind of non-linear current vortex is used to matter damper, include following design procedure:
Step 1, ball screw, upper and lower magnetic conduction plectane, conductor plectane, set of permanent magnets are just determined by half theoretical half simulation analysis
The parameter of part and inertial flywheel；
Step 2, by the parameter of the continuous set-up procedure 1 of Finite Element Simulation Analysis until meeting design object requirement.
Further, the step 1 specifically includes:
Step 101, just determine the ginseng of ball screw, upper and lower magnetic conduction plectane, conductor plectane, permanent magnet assembly and inertial flywheel
Number；
Step 102, the main magnetic strength of single group permanent magnet center is obtained using COMSOLMultiphysics software emulation
Intensity is answered, by formula F=-vrσδsBz 2sign(vr) single group permanent magnet and conductor plectane relative motion generation current vortex is calculated
The Lorentz force F that effect is formed, wherein σ indicates the conductivity of conductor plectane, and δ indicates that conductor circle plate thickness, s indicate monolithic permanent magnetism
The plane projection area in body magnetic field, BzIndicate the main magnetic induction intensity at conductor plectane position, vrIndicate permanent magnet center linear speed
Degree, sign () indicate sign function；
Step 103, pass through formulaCurrent vortex total damping torque T is calculatede, by TeSubstitution formulaBe calculated Lorentz force couple logarithm n, i.e., permanent magnet vertically magnetic conduction plectane surface perpendicular to ball screw
2n group is symmetrically arranged in central axes direction, wherein LdThe lead and ball-screw-transmission system of ball screw are respectively indicated with η
Inverse transmission efficiency, diIndicate permanent magnet to the center of ball screw away from TeIndicate the accordingly corresponding electric whirlpool of symmetrical two groups of permanent magnets
Flow total damping torque, FeIndicate that non-linear current vortex is used to the eddy-current damping power of matter damper, F indicates single group permanent magnet and conductor
Plectane relative motion generates the Lorentz force that eddy current effect is formed；
Step 104, pass through formulaAnd formulaTotal rotary inertia J of rotary part is calculatedw,
Choose the size of inertial flywheel, wherein FaWith maRespectively indicate inertia force and inertia matter that non-linear current vortex is used to matter damper
Amount, LdThe lead of ball screw and the inverse transmission efficiency of ball-screw-transmission system, J are respectively indicated with ηwIndicate non-linear electric whirlpool
Total rotary inertia of used matter damper rotary part is flowed,Indicate that non-linear current vortex is used to the axial acceleration of matter damper；
The step 2 specifically includes:
Step 201, using the transient state analyzing method pair of COMSOLMultiphysics software quasi-static analysis modules A C/DC
Single group permanent magnet eddy-current damping carries out 3 D electromagnetic field finite element simulation, obtains the corresponding Lorentz force F of single group permanent magnet；
Step 202, pass through formulaThe current vortex total damping that non-linear current vortex is used to matter damper is calculated
Torque Te, then use formulaConversion obtains eddy-current damping power Fe, wherein LdBall screw is respectively indicated with η
The inverse transmission efficiency of lead and ball-screw-transmission system, diIndicate permanent magnet to the center of ball screw away from TeExpression is mutually coped with
Claim two groups of permanent magnets corresponding current vortex total damping torque, FeIndicate that non-linear current vortex is used to the eddy-current damping of matter damper
Power, F indicates single group permanent magnet and the relative motion of conductor plectane generates the Lorentz force that eddy current effect is formed, and n indicates Lorentz
Force couple number；
Step 203, the eddy-current damping power target design value for being used to matter damper with non-linear current vortex compares, and checks
Preliminary design is as a result, constantly adjustment preliminary project is until meet design object requirement.
Compared with prior art, the invention has the following advantages that
1, the present invention can satisfy the requirement of large scale civil engineering vibration control, simple, convenient for installation and maintenance with structure,
The advantages that service life is long, pollution-free.
2, non-linear current vortex of the invention is used to the apparent mass negative stiffness effects that matter damper utilizes rotating member, is formed
Very big damper shaft further increases the passive energy dissipation efficiency of axial rotary eddy current damper to damping force.
3, non-linear current vortex of the invention be used to matter damper by pass through conductor plectane magnetic induction intensity constantly variation,
Realize nonlinear characteristic of the eddy-current damping power Rate Index less than 1, energy efficiency is equal to 1 damping much higher than Rate Index
Power is contributed linear eddy current damper.
4, the used matter damper of non-linear current vortex of the invention can be by adjusting permanent magnet quantity and spacing, permanent magnet magnetic
Field intensity, the modes such as diameter of magnetic conduction plectane adjust the damped coefficient of eddy current damper, while can fly by adjusting inertia
The rotary inertia of wheel adjusts the axial damping force of eddy current damper, is suitble to the large, medium and small all types of dampers of manufacture.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is that a kind of non-linear current vortex of the embodiment of the present invention is used to the structural schematic diagram of matter damper；
Fig. 2 is axial force-axial displacement hysteretic relationship curve graph in the embodiment of the present invention
Fig. 3 is total axial force and eddy-current damping power timeamplitude map in the embodiment of the present invention；
Fig. 4 is eddy-current damping power and axial displacement relationship measured curve figure in the embodiment of the present invention；
Fig. 5 is eddy-current damping power and axial velocity relationship measured curve figure in the embodiment of the present invention.
Meaning representated by serial number in figure are as follows: 1. ball screws, 2. ball nuts, magnetic conduction plectane on 3., 4. lower magnetic conductions circles
Plate, 5. upper magnets, 6. lower magnets, 7. conductor plectanes, 8. inertial flywheels, 9. connecting rods, 10. linear bearings, 11. straight lines circle rail,
12. up-thrust bearing, outer cylinder on 13., 14. lower thrust-bearings, 15. lower outer cylinders, on 16. connecting pin, 17. lower connecting pins, outside 18.
Plectane on cylinder, plectane under 19. outer cylinders.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.
Embodiment one
As shown in Figure 1, a kind of non-linear current vortex of the present embodiment is used to matter damper, including transmission component, rotary electric
Eddy current damping element, inertial flywheel 8 and outer cylinder；The transmission component includes ball-screw-transmission system, linear guide and connection
Bar 9, the ball-screw-transmission system are set to the middle position of damper, the rotary electric eddy current damping element and inertia
Flywheel 8 is set in the outside of ball-screw-transmission system, and the linear guide passes vertically through the top of outer cylinder, and upper end passes through company
Extension bar 9 is fixedly connected with ball-screw-transmission system, and lower end is fixedly connected with rotary electric eddy current damping element；The ball wire
Thick stick transmission system, rotary electric eddy current damping element and inertial flywheel 8 pass through built in up-thrust bearing 12 and lower thrust-bearing 14
In outer cylinder.
The ball-screw-transmission system includes ball screw 1 and the ball nut 2 that is sleeved on ball screw 1, described
The upper end of ball screw 1 is equipped with upper connecting pin 16.
The rotary electric eddy current damping element includes upper magnetic conduction plectane 3, lower magnetic conduction plectane 4, conductor plectane 7, upper magnet 5
With lower magnet 6；The upper magnetic conduction plectane 3 and lower magnetic conduction plectane 4 are separately fixed at the top and bottom of ball nut 2；On described
The quantity of magnet 5 and lower magnet 6 is 2n, wherein n >=1, and n takes 6, the i.e. number of upper magnet 5 and lower magnet 6 in the present embodiment
Amount is 24, and the upper magnet 5 is uniformly fixed on the lower surface of upper magnetic conduction plectane 3 along the circumferential direction of upper magnetic conduction plectane 3, under described
Magnet 6 is fixed on the upper surface of lower magnetic conduction plectane 4, and symmetrical with upper magnet 5, attracts each other；The conductor plectane 7 is set in
The outside of ball nut 2.Inside and outside circle magnet center to 1 centre distance of ball screw be respectively 43mm and 68mm；Conductor plectane 7
With the original net square h of upper magnet 5, lower magnet 6gFor 15mm.
The inertial flywheel 8 is sleeved on ball screw 1 and is fixed as one with ball nut 2, and is installed on lower magnetic conduction
The lower surface of plectane 4；It is reciprocal that the inertial flywheel 8, upper magnetic conduction plectane 3, lower magnetic conduction plectane 4 with ball nut 2 do synchronous rotary
Movement.
The conductor plectane 7 is made of excellent conductive material, such as electrician's red copper；The upper magnetic conduction plectane 3 and lower magnetic conduction
Plectane 4 is made of the good material of magnetic property, such as Pure iron or mild steel；The inertial flywheel 8 is round plate；It is described
Upper magnet 5 and lower magnet 6 use N50 type NdFeB permanent magnet, and size is 20mm × 20mm × 10mm.
The outer cylinder includes upper outer cylinder 13, lower outer cylinder 15 and is separately fixed at plectane on the outer cylinder of 13 upper and lower ends of outer cylinder
18 and outer cylinder under plectane 19；The lower end of the lower outer cylinder 15 is equipped with lower connecting pin 17.
The ball screw 1 successively passes through plectane 18 on outer cylinder, up-thrust bearing 12, upper magnetic conduction plectane from top to bottom
3, each component centre bore of plectane 19 under conductor plectane 7, lower magnetic conduction plectane 4, inertial flywheel 8, lower thrust-bearing 14 and outer cylinder, and with
There are certain gaps between ball screw 1 for upper each component.
The linear guide includes linear bearing 10 and the round rail 11 of the straight line of plectane 18 on outer cylinder, the straight line circle rail
11 upper end is fixedly connected with connecting rod 9, and lower end is fixedly connected with conductor plectane 7, the straight line circle rail 11 and plectane on outer cylinder
There are gaps between 18 and upper magnetic conduction plectane 19；The linear bearing 10 is set on straight line circle rail 11, and is fixed on outer cylinder
The upper surface of upper plectane 18；The connecting rod 9 is fixedly connected with ball screw 1；The straight line circle rail 11, conductor plectane 7 and rolling
Ballscrew 1 does synchronous linear reciprocating motion.
The non-linear current vortex is used to matter damper, and the specific working principle is as follows:
When non-linear current vortex is used to the upper connecting pin 16 of matter damper, lower connecting pin 17 exists relatively with inside configuration respectively
Two nodes of displacement are connected, and the relative axial movement between the tie point of damper both ends is then converted into magnetic conduction plectane and inertia up and down
The high speed rotary motion of flywheel 8, while ball screw 1 and conductor plectane 7 do synchronous linear movement, upper and lower magnetic conduction with structural vibration
The rotator inertia square and conductor plectane 7 that the high speed rotary motion of plectane and inertial flywheel 8 generates cut the set of permanent magnets magnetic line of force and produce
Raw eddy-current damping torque is further amplified through ball-screw-transmission system is respectively formed axial inertia force and eddy-current damping
Power.
The present embodiment additionally provides a kind of design method of used matter damper of non-linear current vortex, walks comprising following design
It is rapid:
Step S101 just determines ball screw, upper and lower magnetic conduction plectane, conductor plectane, permanent magnetism by half theoretical half simulation analysis
The parameter of body component and inertial flywheel；
Step S102, by the parameter of the continuous set-up procedure 1 of Finite Element Simulation Analysis until meeting design object requirement.
Further, the step S101 is specifically included:
Step S1011 just determines the ginseng of ball screw, upper and lower magnetic conduction plectane, conductor plectane, permanent magnet assembly and inertial flywheel
Number；
Step S1012 obtains the main magnetic of single group permanent magnet center using COMSOLMultiphysics software emulation
Induction, by formula F=-vrσδsBz 2sign(vr) single group permanent magnet and the electric whirlpool of conductor plectane relative motion generation is calculated
The Lorentz force F that effect is formed is flowed, wherein σ indicates the conductivity of conductor plectane, and δ indicates that conductor circle plate thickness, s indicate monolithic forever
The plane projection area of magnets magnetic fields, BzIndicate the main magnetic induction intensity at conductor plectane position, vrIndicate permanent magnet center linear speed
Degree, sign () indicate sign function；
Step S1013, passes through formulaCurrent vortex total damping torque T is calculatede, by TeSubstitution formulaBe calculated Lorentz force couple logarithm n, i.e., permanent magnet vertically magnetic conduction plectane surface perpendicular to ball screw
2n group is symmetrically arranged in central axes direction, wherein LdThe lead and ball-screw-transmission system of ball screw are respectively indicated with η
Inverse transmission efficiency, diIndicate permanent magnet to the center of ball screw away from TeIndicate the accordingly corresponding electric whirlpool of symmetrical two groups of permanent magnets
Flow total damping torque, FeIndicate that non-linear current vortex is used to the eddy-current damping power of matter damper, F indicates single group permanent magnet and conductor
Plectane relative motion generates the Lorentz force that eddy current effect is formed；
Step S1014, passes through formulaAnd formulaTotal rotary inertia of rotary part is calculated
Jw, choose the size of inertial flywheel, wherein FaWith maRespectively indicate inertia force and inertia that non-linear current vortex is used to matter damper
Quality, LdThe lead of ball screw and the inverse transmission efficiency of ball-screw-transmission system, J are respectively indicated with ηwIndicate non-linear electricity
It is vortexed total rotary inertia of used matter damper rotary part,Indicate that non-linear current vortex is used to the axial acceleration of matter damper；
The step S102 is specifically included:
Step S1021, using the transient state analyzing method of COMSOLMultiphysics software quasi-static analysis modules A C/DC
3 D electromagnetic field finite element simulation is carried out to single group permanent magnet eddy-current damping, obtains the corresponding Lorentz force F of single group permanent magnet；
Step S1022, passes through formulaThe current vortex that the used matter damper of non-linear current vortex is calculated always hinders
Buddhist nun's torque Te, then use formulaConversion obtains eddy-current damping power Fe, wherein LdBall screw is respectively indicated with η
Lead and ball-screw-transmission system inverse transmission efficiency, diIndicate permanent magnet to the center of ball screw away from TeIndicate corresponding
The corresponding current vortex total damping torque of symmetrical two groups of permanent magnets, FeIndicate that non-linear current vortex is used to the eddy-current damping of matter damper
Power, F indicates single group permanent magnet and the relative motion of conductor plectane generates the Lorentz force that eddy current effect is formed, and n indicates Lorentz
Force couple number；
Step S1023, the eddy-current damping power target design value for being used to matter damper with non-linear current vortex compare, school
Core Preliminary design is as a result, constantly adjustment preliminary project is until meet design object requirement.
Scheme carries out the used matter damper designs of non-linear current vortex according to the present invention, and the non-linear current vortex designed is used
Matter damper design parameter is shown in Table 1.
Table 1 is non-linear to be vortexed used matter damper designs parameter
Non-linear current vortex is used to matter damper performance test: being used to matter resistance to non-linear current vortex by eccentric wheel exciting agency
Buddhist nun's device model machine carry out simple harmonic quantity Displacement excitation, amplitude preservation 10mm it is constant (excited frequency be respectively set as 0.5Hz, 1.0Hz with
2.0Hz)；The axial force and axial displacement signal that non-linear current vortex is used to matter damper are recorded using dynamic signal acquisition system.
Non-linear current vortex is used to matter Damper Test result: Fig. 2 gives the axial direction that non-linear current vortex is used to matter damper
Power-axial displacement hysteretic relationship curve test is as a result, damper shows expected negative stiffness effects.Fig. 3 gives non-linear
Current vortex is used to the total axial force and eddy-current damping power time-history curves of matter damper model machine.Figure 4 and figure 5 respectively show non-linear
Current vortex is used to the eddy-current damping power and axial displacement, eddy-current damping power and axial velocity relationship measured curve of matter damper,
It can be seen that each operating condition eddy-current damping power shows nonlinear characteristic.
Finally, it should be noted that embodiment described above, only a specific embodiment of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, those skilled in the art should understand that: anyone skilled in the art
In the technical scope disclosed by the present invention, it can still modify to technical solution documented by previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover in protection of the invention
Within the scope of.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. a kind of non-linear current vortex is used to matter damper, which is characterized in that including transmission component, rotary electric eddy current damping member
Part, inertial flywheel and outer cylinder；The transmission component includes ball-screw-transmission system, linear guide and connecting rod, the ball
Leadscrew drive system is set to the middle position of damper, and the rotary electric eddy current damping element and inertial flywheel are set in
The outside of ball-screw-transmission system, the linear guide pass vertically through the top of outer cylinder, and upper end passes through connecting rod and ball wire
Thick stick transmission system is fixedly connected, and lower end is fixedly connected with rotary electric eddy current damping element；The ball-screw-transmission system, rotation
Rotatable eddy-current damping element and inertial flywheel are built in outer cylinder by up-thrust bearing and lower thrust-bearing.
2. non-linear current vortex according to claim 1 is used to matter damper, which is characterized in that the ball-screw-transmission system
System includes ball screw and the ball nut being sleeved on ball screw, and the upper end of the ball screw is equipped with upper connecting pin.
3. non-linear current vortex according to claim 2 is used to matter damper, which is characterized in that the rotary electric vortex resistance
Buddhist nun's element includes upper magnetic conduction plectane, lower magnetic conduction plectane, conductor plectane, upper magnet and lower magnet；The upper magnetic conduction plectane is led under
Magnetic plectane is separately fixed at the top and bottom of ball nut；The quantity of the upper magnet and lower magnet is 2n, wherein n >=
1, the upper magnet is uniformly fixed on the lower surface of upper magnetic conduction plectane along the circumferential direction of upper magnetic conduction plectane, and the lower magnet is fixed on down
The upper surface of magnetic conduction plectane, and it is symmetrical with upper magnet；The conductor plectane is set in the outside of ball nut.
4. non-linear current vortex according to claim 3 is used to matter damper, which is characterized in that the inertial flywheel is sleeved on
It is fixed as one on ball screw and with ball nut, and is installed on the lower surface of lower magnetic conduction plectane；The inertial flywheel, on lead
Magnetic plectane, lower magnetic conduction plectane and ball nut do synchronous rotary reciprocating motion.
5. non-linear current vortex according to claim 4 is used to matter damper, which is characterized in that the conductor plectane is by conduction
Material is made；The upper magnetic conduction plectane and lower magnetic conduction plectane are made of permeability magnetic material；The inertial flywheel is round plate；On described
Magnet and lower magnet use permanent magnet.
6. non-linear current vortex according to claim 4 is used to matter damper, which is characterized in that the outer cylinder includes upper outer
Cylinder, lower outer cylinder and plectane under plectane and outer cylinder is separately fixed on the outer cylinder of outer cylinder upper and lower ends；The lower end of the lower outer cylinder
Equipped with lower connecting pin.
7. non-linear current vortex according to claim 6 is used to matter damper, which is characterized in that the ball screw from upper and
Under successively pass through plectane on outer cylinder, up-thrust bearing, upper magnetic conduction plectane, conductor plectane, lower magnetic conduction plectane, inertial flywheel,
Each component centre bore of plectane under lower thrust-bearing and outer cylinder, and there are between certain between ball screw for above each component
Gap.
8. non-linear current vortex according to claim 6 is used to matter damper, which is characterized in that the linear guide includes straight
Spool hold and on outer cylinder plectane straight line circle rail, the upper end of straight line circle rail is fixedly connected with the connecting rod, lower end with lead
Body plectane is fixedly connected, and there are gaps between plectane and upper magnetic conduction plectane on the straight line circle rail and outer cylinder；The linear axis
Bearing sleeve is loaded on straight line circle rail, and is fixed on the upper surface of plectane on outer cylinder；The connecting rod is fixedly connected with ball screw；Institute
It states straight line circle rail, conductor plectane and ball screw and does synchronous linear reciprocating motion.
9. a kind of design method for being used to matter damper based on the described in any item non-linear current vortexs of claim 1 to 8, feature
It is, includes following design procedure:
Step 1, by half theoretical half simulation analysis just determine ball screw, upper and lower magnetic conduction plectane, conductor plectane, permanent magnet assembly and
The parameter of inertial flywheel；
Step 2, by the parameter of the continuous set-up procedure 1 of Finite Element Simulation Analysis until meeting design object requirement.
10. the design method that non-linear current vortex according to claim 9 is used to matter damper, which is characterized in that the step
Rapid 1 specifically includes:
Step 101, just determine the parameter of ball screw, upper and lower magnetic conduction plectane, conductor plectane, permanent magnet assembly and inertial flywheel；
Step 102, the main magnetic induction for obtaining single group permanent magnet center using COMSOLMultiphysics software emulation is strong
Degree, by formula F=-vrσδsBz 2sign(vr) single group permanent magnet and conductor plectane relative motion generation eddy current effect is calculated
The Lorentz force F of formation, wherein σ indicates the conductivity of conductor plectane, and δ indicates that conductor circle plate thickness, s indicate monolithic permanent magnet magnetic
The plane projection area of field, BzIndicate the main magnetic induction intensity at conductor plectane position, vrIndicate permanent magnet center line velocity,
Sign () indicates sign function；
Step 103, pass through formulaCurrent vortex total damping torque T is calculatede, by TeSubstitution formulaMeter
Calculation obtains Lorentz force couple logarithm n, i.e., vertically magnetic conduction plectane surface is equal perpendicular to ball screw central axes direction for permanent magnet
It is even to be arranged symmetrically 2n group, wherein LdIt is imitated with the η inverse transmission for respectively indicating the lead and ball-screw-transmission system of ball screw
Rate, diIndicate permanent magnet to the center of ball screw away from TeIndicate the accordingly corresponding current vortex total damping power of symmetrical two groups of permanent magnets
Square, FeIndicate that non-linear current vortex is used to the eddy-current damping power of matter damper, F indicates single group permanent magnet fortune opposite with conductor plectane
The Lorentz force that the raw eddy current effect of movable property is formed；
Step 104, pass through formula Fa=maü and formulaTotal rotary inertia J of rotary part is calculatedw, choose used
The size of property flywheel, wherein FaWith maRespectively indicate inertia force and inertia mass that non-linear current vortex is used to matter damper, LdWith η
Respectively indicate the lead of ball screw and the inverse transmission efficiency of ball-screw-transmission system, JwIndicate that non-linear current vortex is used to matter resistance
Total rotary inertia of Buddhist nun's device rotary part, ü indicate that non-linear current vortex is used to the axial acceleration of matter damper；
The step 2 specifically includes:
Step 201, using the transient state analyzing method of COMSOLMultiphysics software quasi-static analysis modules A C/DC to single group
Permanent magnet eddy-current damping carries out 3 D electromagnetic field finite element simulation, obtains the corresponding Lorentz force F of single group permanent magnet；
Step 202, pass through formulaThe current vortex total damping torque that non-linear current vortex is used to matter damper is calculated
Te, then use formulaConversion obtains eddy-current damping power Fe, wherein LdThe lead of ball screw is respectively indicated with η
With the inverse transmission efficiency of ball-screw-transmission system, diIndicate permanent magnet to the center of ball screw away from TeIndicate corresponding symmetrical two
The corresponding current vortex total damping torque of group permanent magnet, FeIndicate that non-linear current vortex is used to the eddy-current damping power of matter damper, F table
Show that single group permanent magnet and the relative motion of conductor plectane generate the Lorentz force that eddy current effect is formed, n indicates Lorentz force couple
Logarithm；
Step 203, the eddy-current damping power target design value for being used to matter damper with non-linear current vortex compares, and checks preliminary
Design result constantly adjusts preliminary project until meeting design object requirement.
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